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Artist 52 [7]
3 years ago
15

If x = 6 and y = -4, evaluate 3x2 - 5y

Mathematics
2 answers:
guajiro [1.7K]3 years ago
8 0

Answer:

the answer is 56

Step-by-step explanation:

3×6×2= 36 and 5×-4=-20. 36-(-20) is 56

Elza [17]3 years ago
3 0

Answer:

solution = 128

Step-by-step explanation:

if x = 6 , y = -4

then,

  • ( 3 × 6 × 6 ) - ( 5 × -4 )
  • 108 + 20
  • 128
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Find the volume of the cylinder in terms of pi.
Marizza181 [45]
Answer is c as the equation for the volume of a cylinder is pi x r^2 x h which equated to pi x 25 x 11 which equals 275 and your units have to be cubed as it is volume.
3 0
3 years ago
Read 2 more answers
A = 1/ 7 - 4√3<br> B = 1/ 7+ 4√3<br> Find....<br> A) a² + b²<br> B) a³ + b³
iragen [17]

The value of a2+b2 = 0.05

The value of a3+b3 = 41.73

Concept: (a+b)2 = a2+b2+2ab

(a-b)2 = a2+b2-2ab

(a+b)3 = a3+b3+3a2b+3ab2

(a-b)3 = a3-b3-3a2b+3ab2

(I) a²+b²=(1/7-4✓3)²+(1/7+4✓3)²

⇒ ( 1/49 - 48) +(1/49 + 48)=(1-2352/49) + (1+2353/49)

⇒ -47.97 +48.02= 0.05

(ii) a³+b³=(1/7-4✓3)³+(1/7+4✓3)³

⇒(-6.78)³ +(7.07)³

⇒-311.66 +353.39= 41.73

For more information about cubes and squares , visit brainly.com/question/107100

#SPJ10

8 0
2 years ago
Does any body know this?? plss help
slega [8]

sorry ill give points back

it's this tally/nathan?

8 0
3 years ago
PLEASE HELP!!!!!!! I NEED HELP!!!!!!!!!!
miss Akunina [59]

Answer:

342in

Step-by-step explanation:

7 0
3 years ago
15 Points!<br> Find the range of the functions:<br><br> f(x) = (x + 1)^2 - 1<br><br> f(x) = 7x - 11
MakcuM [25]

In both cases you may well benefit from graphing the functions.

Do you recognize f(x) = (x + 1)^2 - 1 as a quadratic function, whose graph is that of a parabola that opens up? By comparing this to y = a(x-h)^2 + k, we see that a=1, h= -1 and k = -1. The vertex is at (h,k), which here is the point (-1, -1). This is the minimum value of the function. Thus, the range of this function is [-1, infinity).


Now for the function f(x) = 7x - 11: This is a linear function whose graph is (surprise!) a straight line. When x increases, y increases, without limits to either. Similarly, when x decreases, y decreases.

Thus the range includes all real numbers: (-infinity, infinity).

4 0
3 years ago
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